dayjs locale config is ignored and it uses automaticly browser locale

[omar-bear]

Describe the bug
dayjs locale config is ignored and it uses automaticly browser locale

Expected behavior

// config.js
import 'dayjs/locale/fr';
dayjs.locale('fr')

in main react page

import './config'

and in my component

dayjs(fullStartDate).to(fullEndDate, true);

the language changes to french but when i refrech it comeback english (i think its because the browser locale)

but when i do this it works as french always

    dayjs(fullStartDate).locale('fr').to(fullEndDate, true);

how can i config the language clearly without using the locale for each time
Information

• Day.js Version 1.10.7
• OS: MacOS monterey
• Browser Chrome last version
• Time zone: (UTC+1)

[DaleCam]

I had to downgrade to 1.9.8 and it is working in that version.
Edit: Actually only some are working in 1.9.8 version. "es" for example is not working whereas "en-gb" is. Wonder if the locales simply need to be updated.

[jasonhieu1905]

@iamkun : got the same issue with the code snippet, global locale is override:

import dayjs from 'dayjs';
import locale from 'dayjs/locale/vi';

dayjs.locale(locale);

dayjs().locale('en-us');

let determinedLocale = dayjs.locale();

// will log 'en' instead of 'vi'
console.log('locale changed by local instance ', determinedLocale);

Issue version: 1.11.1
Works fine with older version like : 1.9.8 & 1.10.8